protrusus, Cottus Schultz [L. P.] & Spoor [W. A.] 1933:142 [Copeia 1933 (no. 3); ref. 16522] Small lake on Unalaska Island, about 400 feet above Makushin Bay, Aleutian Islands. Holotype: USNM 104496 [ex UW 2334]. Paratypes: (5) UMMZ 64234 (1). •Synonym of Cottus aleuticus Gilbert 1896 -- (Lee et al. 1980:801 [ref. 22416], Scott & Crossman 1998:820 [ref. 24570], Mecklenburg et al. 2002:470 [ref. 25968]). Current status: Synonym of Cottus aleuticus Gilbert 1896. Cottidae. Habitat: freshwater, brackish.